PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/10-13:58:10
G01     64.1           31.7                6.6 +/-    0.75      11.1 +/-    0.75  0.040 / 0.040
G07     140.5          25.6                9.7 +/-    1.51      18.7 +/-    1.51  0.040 / 0.040
G11     49.5           25.6                6.5 +/-    0.73      12.4 +/-    0.73  0.070 / 0.130
G13     266.7          36.5                9.5 +/-    1.43      14.7 +/-    1.43  0.070 / 0.130
G15     300.3          14.6                4.0 +/-    1.22       9.9 +/-    1.22  0.070 / 0.160
G17     248.5          75.1                9.5 +/-    0.57       9.8 +/-    0.57  0.070 / 0.160
G18     44.4           14.7                5.0 +/-    1.64      12.5 +/-    1.64  0.060 / 0.050
G19     228.5          43.9               11.1 +/-    1.04      15.2 +/-    1.04  0.050 / 0.040
G28     29.3           57.9                7.0 +/-    0.59       8.1 +/-    0.59  0.050 / 0.070
G30     141.2          57.6                8.3 +/-    1.00       9.6 +/-    1.00  0.050 / 0.070