PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/01-20:58:10
G02     205.0          40.3               14.0 +/-    0.93      20.3 +/-    0.93  0.160 / 0.300
G06     144.2          74.9               12.9 +/-    0.39      13.3 +/-    0.39  0.180 / 0.290
G12     310.8          20.6               11.0 +/-    1.88      23.8 +/-    1.88  0.060 / 0.090
G17     38.9           47.2               10.5 +/-    0.51      13.7 +/-    0.51  0.060 / 0.090
G19     8.0            62.9               10.3 +/-    0.36      11.5 +/-    0.36  0.030 / 0.060
G24     291.2          40.6                9.9 +/-    0.72      14.3 +/-    0.72  0.040 / 0.060
G28     107.6          27.4               10.4 +/-    2.00      19.2 +/-    2.00  0.100 / 0.150