PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-16:58:10
G02     205.9          37.8               12.4 +/-    0.60      18.7 +/-    0.60  0.190 / 0.230
G06     146.7          75.0               10.1 +/-    0.60      10.4 +/-    0.60  0.090 / 0.240
G12     311.2          20.7               10.6 +/-    1.64      22.9 +/-    1.64  0.070 / 0.090
G17     43.9           42.6                7.9 +/-    0.60      11.1 +/-    0.60  0.070 / 0.100
G19     17.5           60.2                8.8 +/-    0.55      10.0 +/-    0.55  0.030 / 0.050
G24     293.1          39.6                9.7 +/-    1.69      14.2 +/-    1.69  0.030 / 0.060
G28     108.5          26.8                8.3 +/-    2.55      15.6 +/-    2.55  0.050 / 0.090