PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-09:57:50
G01     63.7           31.5                5.6 +/-    0.89       9.6 +/-    0.89  0.030 / 0.050
G06     182.5          10.4              -14.4 +/-   29.85     -39.7 +/-   29.85  0.030 / 0.050
G07     140.5          24.0                7.5 +/-    1.72      15.0 +/-    1.72  0.020 / 0.030
G11     49.7           25.1                4.7 +/-    1.36       9.2 +/-    1.36  0.030 / 0.030
G13     268.9          35.9                6.7 +/-    0.82      10.5 +/-    0.82  0.050 / 0.160
G15     297.5          16.2                4.4 +/-    2.00      10.7 +/-    2.00  0.070 / 0.170
G17     251.7          76.2                7.9 +/-    1.12       8.1 +/-    1.12  0.070 / 0.080
G19     229.7          49.4                7.9 +/-    0.64      10.0 +/-    0.64  0.060 / 0.080
G28     31.1           57.4                5.0 +/-    0.86       5.9 +/-    0.86  0.110 / 0.330
G30     140.6          56.2                9.8 +/-    0.84      11.6 +/-    0.84  0.110 / 0.250