PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-19:42:40
G07     18.7           68.5               14.2 +/-    0.69      15.1 +/-    0.69  0.040 / 0.050
G08     65.5           50.8               14.2 +/-    1.01      17.8 +/-    1.01  0.050 / 0.040
G09     180.4          48.6               16.0 +/-    1.05      20.5 +/-    1.05  0.170 / 0.360
G11     130.8          28.0               16.1 +/-    0.95      29.4 +/-    0.95  0.160 / 0.300
G18     113.9          10.9               16.6 +/-    2.96      45.5 +/-    2.96  0.160 / 0.350
G23     158.9          14.5               16.8 +/-    2.65      42.4 +/-    2.65  0.190 / 0.310
G27     39.7           15.4               11.7 +/-    2.17      28.9 +/-    2.17  0.040 / 0.050
G28     261.4          46.9               15.9 +/-    4.26      20.9 +/-    4.26  0.050 / 0.040
G30     323.9          53.6               13.1 +/-    0.52      15.9 +/-    0.52  0.030 / 0.030