PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-17:12:50
G01     119.0          18.1               18.4 +/-    0.77      42.4 +/-    0.77  0.040 / 0.070
G07     80.4           66.8               17.3 +/-    0.50      18.7 +/-    0.50  0.040 / 0.070
G08     45.4           33.0               14.5 +/-    0.39      23.9 +/-    0.39  0.030 / 0.040
G09     176.9          25.6               18.9 +/-    1.59      36.4 +/-    1.59  0.020 / 0.040
G11     107.4          40.1               18.1 +/-    0.88      26.3 +/-    0.88  0.030 / 0.040
G13     317.6          19.5               17.0 +/-    2.03      37.8 +/-    2.03  0.030 / 0.040
G17     202.5          22.5               19.6 +/-    2.21      40.6 +/-    2.21  0.050 / 0.090
G18     94.3           21.0               16.1 +/-    0.82      34.7 +/-    0.82  0.050 / 0.100
G28     293.4          57.5               17.3 +/-    1.43      20.1 +/-    1.43  0.070 / 0.180
G30     348.3          69.2               16.0 +/-    0.52      16.9 +/-    0.52  0.060 / 0.130