PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-14:12:50
G01     82.9           32.7                5.9 +/-    0.80       9.8 +/-    0.80  0.040 / 0.030
G07     130.5          37.2                7.3 +/-    1.11      11.1 +/-    1.11  0.030 / 0.050
G11     60.9           34.5                5.1 +/-    2.44       8.2 +/-    2.44  0.040 / 0.090
G13     289.8          36.2                5.9 +/-    1.30       9.1 +/-    1.30  0.040 / 0.080
G15     313.4          10.9               -0.6 +/-   17.43      -1.7 +/-   17.43  0.060 / 0.100
G17     219.5          62.2                8.9 +/-    0.37       9.9 +/-    0.37  0.060 / 0.100
G19     217.5          34.4               -7.9 +/-   47.69     -12.6 +/-   47.69  0.080 / 0.110
G28     0.9            61.0                5.6 +/-    3.94       6.3 +/-    3.94  0.080 / 0.100
G30     116.4          73.6                7.9 +/-    0.95       8.2 +/-    0.95  0.030 / 0.040