PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-20:43:00
G01     80.4           33.2               11.7 +/-    0.93      19.1 +/-    0.93  0.120 / 0.170
G07     132.2          38.7               14.9 +/-    0.94      22.2 +/-    0.94  0.280 / 0.290
G11     61.3           36.9               12.3 +/-    0.77      18.8 +/-    0.77  0.090 / 0.210
G13     285.0          37.5               13.1 +/-    0.65      19.9 +/-    0.65  0.130 / 0.200
G15     309.3          13.2               10.6 +/-    3.40      27.5 +/-    3.40  0.090 / 0.100
G17     222.2          57.1               14.9 +/-    1.72      17.4 +/-    1.72  0.110 / 0.110
G18     56.3           21.9               10.2 +/-    3.74      21.3 +/-    3.74  0.030 / 0.080
G19     219.0          33.7               15.2 +/-    2.19      24.7 +/-    2.19  0.040 / 0.070
G28     5.7            60.8               11.3 +/-    1.19      12.8 +/-    1.19  0.030 / 0.040
G30     125.0          67.7               13.9 +/-    0.71      14.9 +/-    0.71  0.030 / 0.030