PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-03:27:50
G01     71.2           33.0                4.2 +/-    0.49       7.0 +/-    0.49  0.030 / 0.060
G07     137.2          31.3                7.3 +/-    1.81      12.4 +/-    1.81  0.030 / 0.040
G11     55.2           32.2                3.5 +/-    0.68       5.9 +/-    0.68  0.040 / 0.100
G13     276.1          37.2                6.3 +/-    1.10       9.7 +/-    1.10  0.040 / 0.100
G15     302.1          15.7                0.0 +/-    1.83       0.1 +/-    1.83  0.100 / 0.360
G17     233.0          68.4                4.7 +/-    0.65       5.0 +/-    0.65  0.110 / 0.360
G19     224.1          42.6                7.0 +/-    0.86       9.8 +/-    0.86  0.040 / 0.030
G28     20.4           59.1                3.2 +/-    0.23       3.7 +/-    0.23  0.030 / 0.030
G30     134.8          58.5                5.3 +/-    0.53       6.1 +/-    0.53  0.040 / 0.070