PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/25-08:42:50
G01     66.4           32.3                3.0 +/-    0.86       5.1 +/-    0.86  0.040 / 0.040
G07     139.4          26.3                5.4 +/-    1.91      10.3 +/-    1.91  0.040 / 0.040
G11     50.3           26.8                2.6 +/-    2.12       4.8 +/-    2.12  0.040 / 0.080
G13     269.2          37.2                4.8 +/-    1.15       7.3 +/-    1.15  0.040 / 0.100
G15     302.3          14.2                1.4 +/-    1.81       3.5 +/-    1.81  0.060 / 0.070
G17     243.7          74.8                5.4 +/-    0.55       5.5 +/-    0.55  0.050 / 0.080
G18     44.7           14.8                1.3 +/-    2.38       3.3 +/-    2.38  0.120 / 0.340
G19     226.6          41.9                6.8 +/-    1.02       9.6 +/-    1.02  0.090 / 0.260
G28     23.6           59.0                3.7 +/-    0.80       4.2 +/-    0.80  0.070 / 0.100
G30     139.5          60.0                6.1 +/-    1.09       6.9 +/-    1.09  0.100 / 0.130