PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-19:12:50
G01     115.2          20.8               14.0 +/-    1.03      30.2 +/-    1.03  0.050 / 0.100
G07     90.5           64.5               12.8 +/-    0.56      14.0 +/-    0.56  0.050 / 0.110
G08     44.2           30.6                9.4 +/-    0.94      16.2 +/-    0.94  0.110 / 0.170
G09     176.7          21.9               13.6 +/-    1.45      28.5 +/-    1.45  0.120 / 0.170
G11     102.6          41.6               14.3 +/-    0.89      20.2 +/-    0.89  0.030 / 0.040
G13     315.5          22.6                7.4 +/-    1.24      15.3 +/-    1.24  0.030 / 0.040
G17     204.1          25.5               12.7 +/-    0.82      24.5 +/-    0.82  0.040 / 0.080
G18     90.1           22.4               11.0 +/-    2.02      22.9 +/-    2.02  0.050 / 0.090
G28     301.8          59.1               11.4 +/-    0.98      13.1 +/-    0.98  0.040 / 0.060
G30     0.0            73.1               11.3 +/-    1.51      11.7 +/-    1.51  0.040 / 0.060