PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-10:27:40
G01     78.5           33.1                4.9 +/-    0.65       8.0 +/-    0.65  0.030 / 0.050
G07     133.2          35.2                5.6 +/-    0.59       8.9 +/-    0.59  0.030 / 0.050
G11     58.3           33.4                3.2 +/-    0.80       5.3 +/-    0.80  0.120 / 0.200
G13     285.1          36.8                4.6 +/-    1.41       7.1 +/-    1.41  0.080 / 0.160
G15     308.8          13.4                3.3 +/-    1.00       8.5 +/-    1.00  0.050 / 0.070
G17     224.0          65.5                7.6 +/-    0.77       8.2 +/-    0.77  0.040 / 0.080
G19     219.7          37.7                7.4 +/-    0.97      11.2 +/-    0.97  0.060 / 0.090
G28     8.6            60.4                3.3 +/-    0.57       3.8 +/-    0.57  0.060 / 0.100
G30     125.5          68.9                5.3 +/-    0.58       5.6 +/-    0.58  0.030 / 0.040