PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-20:12:50
G01     123.5          14.6               17.2 +/-    2.57      43.2 +/-    2.57  0.060 / 0.050
G07     64.9           68.9               14.3 +/-    0.54      15.2 +/-    0.54  0.050 / 0.040
G08     49.4           40.0               10.5 +/-    0.95      15.2 +/-    0.95  0.200 / 0.300
G09     178.2          32.1               13.9 +/-    0.71      23.3 +/-    0.71  0.160 / 0.280
G11     115.7          37.4               14.3 +/-    1.29      21.7 +/-    1.29  0.030 / 0.030
G13     320.0          14.9               10.4 +/-    1.94      25.9 +/-    1.94  0.030 / 0.030
G17     202.0          15.4               21.7 +/-    1.87      53.5 +/-    1.87  0.040 / 0.030
G18     100.1          18.7               13.4 +/-    1.63      30.5 +/-    1.63  0.030 / 0.040
G28     284.2          55.4               14.0 +/-    2.71      16.6 +/-    2.71  0.120 / 0.210
G30     342.5          65.8               13.6 +/-    0.50      14.7 +/-    0.50  0.110 / 0.180