PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-08:58:10
G01     78.0           33.2                4.5 +/-    0.47       7.4 +/-    0.47  0.040 / 0.060
G07     133.5          35.2                5.8 +/-    0.58       9.2 +/-    0.58  0.030 / 0.050
G11     58.3           33.6                3.2 +/-    0.70       5.3 +/-    0.70  0.070 / 0.210
G13     284.3          36.9                5.4 +/-    0.86       8.3 +/-    0.86  0.080 / 0.200
G15     308.0          13.8                2.1 +/-    1.73       5.3 +/-    1.73  0.040 / 0.070
G17     224.6          65.5                8.2 +/-    1.47       8.9 +/-    1.47  0.040 / 0.070
G19     220.0          38.0                6.3 +/-    0.98       9.5 +/-    0.98  0.040 / 0.040
G28     9.6            60.3                3.2 +/-    0.60       3.7 +/-    0.60  0.030 / 0.040
G30     126.6          67.8                5.2 +/-    0.49       5.6 +/-    0.49  0.060 / 0.090