PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-16:57:40
G07     38.8           69.8               12.9 +/-    0.92      13.6 +/-    0.92  0.200 / 0.180
G08     55.2           44.5               13.0 +/-    0.65      17.7 +/-    0.65  0.040 / 0.040
G09     178.6          40.4               13.8 +/-    1.69      19.9 +/-    1.69  0.030 / 0.020
G11     123.4          32.7               14.2 +/-    0.94      23.5 +/-    0.94  0.030 / 0.030
G18     107.8          14.6               12.7 +/-    2.02      32.0 +/-    2.02  0.040 / 0.040
G27     37.7           10.2                9.7 +/-    4.51      26.9 +/-    4.51  0.030 / 0.040
G28     270.4          50.8               14.0 +/-    2.91      17.5 +/-    2.91  0.170 / 0.370
G30     329.2          57.7               12.0 +/-    0.51      14.0 +/-    0.51  0.140 / 0.320