PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/02-08:27:50
G01     120.8          16.5                5.2 +/-    1.47      12.5 +/-    1.47  0.040 / 0.110
G07     77.2           66.8                3.3 +/-    0.88       3.6 +/-    0.88  0.050 / 0.100
G08     45.1           31.2                3.5 +/-    1.63       6.1 +/-    1.63  0.030 / 0.040
G09     173.4          23.0                4.3 +/-    2.17       8.8 +/-    2.17  0.030 / 0.040
G11     107.5          39.3                5.1 +/-    0.86       7.4 +/-    0.86  0.100 / 0.180
G13     318.4          18.2                2.2 +/-    1.97       5.1 +/-    1.97  0.130 / 0.140
G17     200.4          24.3                4.0 +/-    0.98       7.9 +/-    0.98  0.120 / 0.270
G18     94.6           20.0                6.0 +/-    1.40      13.1 +/-    1.40  0.160 / 0.300
G28     287.4          55.9                4.7 +/-    0.98       5.5 +/-    0.98  0.130 / 0.340
G30     340.1          65.8                2.2 +/-    0.60       2.3 +/-    0.60  0.120 / 0.330