PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-12:42:50
G01     71.9           33.0                4.5 +/-    0.78       7.4 +/-    0.78  0.040 / 0.030
G07     136.8          31.7                6.0 +/-    0.96      10.1 +/-    0.96  0.040 / 0.030
G11     53.5           30.2                3.6 +/-    1.37       6.3 +/-    1.37  0.050 / 0.100
G13     275.3          37.9                5.6 +/-    1.77       8.5 +/-    1.77  0.050 / 0.120
G15     306.7          13.0                1.8 +/-    1.80       4.7 +/-    1.80  0.090 / 0.180
G17     232.2          70.2                6.5 +/-    2.18       6.8 +/-    2.18  0.080 / 0.170
G18     49.3           18.2                3.0 +/-    0.68       6.9 +/-    0.68  0.060 / 0.070
G19     223.2          37.3                4.7 +/-    1.86       7.1 +/-    1.86  0.100 / 0.080
G28     17.3           59.6                4.1 +/-    0.59       4.7 +/-    0.59  0.050 / 0.110
G30     134.4          64.8                3.9 +/-    2.30       4.2 +/-    2.30  0.050 / 0.120