PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-16:43:10
G07     25.4           69.2               11.8 +/-    0.43      12.5 +/-    0.43  0.040 / 0.060
G08     60.0           47.4               11.1 +/-    0.53      14.5 +/-    0.53  0.040 / 0.050
G09     179.2          45.2               14.0 +/-    0.56      18.8 +/-    0.56  0.030 / 0.040
G11     127.6          29.9               13.5 +/-    2.17      23.7 +/-    2.17  0.030 / 0.040
G18     111.7          12.2               10.6 +/-    2.74      28.3 +/-    2.74  0.040 / 0.060
G23     159.0          12.2               10.7 +/-    2.21      28.3 +/-    2.21  0.040 / 0.040
G27     39.0           13.8                8.5 +/-    1.07      21.8 +/-    1.07  0.090 / 0.190
G28     264.1          48.1               14.5 +/-    0.61      18.7 +/-    0.61  0.100 / 0.190
G30     324.6          54.1               12.8 +/-    1.20      15.3 +/-    1.20  0.070 / 0.350