PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/13-23:42:30
G02     200.2          24.8               16.4 +/-    4.58      32.3 +/-    4.58  0.030 / 0.020
G06     169.6          57.0               13.1 +/-    0.34      15.3 +/-    0.34  0.030 / 0.010
G13     225.6          11.2               16.3 +/-    2.23      44.4 +/-    2.23  0.430 / 0.340
G17     18.4           61.1                9.7 +/-    0.73      10.9 +/-    0.73  0.300 / 0.360
G19     329.7          70.3               11.4 +/-    0.58      12.0 +/-    0.58  0.080 / 0.050
G24     308.2          31.4               11.8 +/-    1.19      20.1 +/-    1.19  0.070 / 0.060
G28     91.5           37.7               11.6 +/-    0.78      17.6 +/-    0.78  0.070 / 0.080
G30     156.8          10.4               18.3 +/-    6.30      50.7 +/-    6.30  0.050 / 0.090