PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-19:43:10
G01     81.4           33.2               13.8 +/-    0.73      22.6 +/-    0.73  0.120 / 0.220
G07     131.7          39.4               15.6 +/-    1.24      22.9 +/-    1.24  0.140 / 0.210
G11     61.8           37.0               12.6 +/-    0.58      19.3 +/-    0.58  0.040 / 0.090
G13     285.9          37.5               14.2 +/-    1.23      21.6 +/-    1.23  0.040 / 0.120
G15     310.2          12.7                9.8 +/-    1.24      25.7 +/-    1.24  0.060 / 0.120
G17     221.4          57.2               15.7 +/-    0.91      18.4 +/-    0.91  0.060 / 0.120
G18     57.0           22.1                9.6 +/-    1.61      20.1 +/-    1.61  0.060 / 0.050
G19     218.5          32.6               18.0 +/-    1.04      29.9 +/-    1.04  0.040 / 0.060
G28     4.0            60.9               13.3 +/-    0.58      15.0 +/-    0.58  0.030 / 0.080
G30     123.5          69.0               15.0 +/-    0.93      15.9 +/-    0.93  0.040 / 0.070