PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-18:27:40
G01     87.3           32.4               12.1 +/-    0.60      20.2 +/-    0.60  0.140 / 0.470
G07     127.7          43.8               14.7 +/-    0.90      20.2 +/-    0.90  0.090 / 0.340
G11     66.6           39.2               11.9 +/-    0.60      17.6 +/-    0.60  0.050 / 0.070
G13     291.8          36.6               13.0 +/-    0.71      20.0 +/-    0.71  0.040 / 0.060
G15     314.2          10.6               -3.4 +/-   28.00      -9.3 +/-   28.00  0.030 / 0.040
G17     216.9          53.2               15.9 +/-    0.92      19.3 +/-    0.92  0.030 / 0.040
G18     61.6           23.5               10.4 +/-    0.99      21.1 +/-    0.99  0.060 / 0.100
G19     215.9          27.7               13.3 +/-    0.72      24.4 +/-    0.72  0.050 / 0.100
G28     354.3          61.5               12.0 +/-    1.21      13.4 +/-    1.21  0.070 / 0.150
G30     112.4          73.7               13.4 +/-    0.75      13.9 +/-    0.75  0.060 / 0.200