PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/15-21:27:50
G01     80.4           33.2               11.8 +/-    0.87      19.4 +/-    0.87  0.100 / 0.070
G07     132.2          38.7               14.5 +/-    0.98      21.5 +/-    0.98  0.080 / 0.060
G11     61.6           37.1               11.8 +/-    1.32      18.1 +/-    1.32  0.070 / 0.040
G13     285.1          37.4               12.8 +/-    0.65      19.5 +/-    0.65  0.070 / 0.050
G15     309.1          13.3                9.5 +/-    2.31      24.6 +/-    2.31  0.040 / 0.030
G17     222.2          56.7               14.6 +/-    1.64      17.1 +/-    1.64  0.040 / 0.030
G18     56.3           21.9               10.3 +/-    3.13      21.6 +/-    3.13  0.140 / 0.170
G19     219.0          33.9               16.4 +/-    2.13      26.6 +/-    2.13  0.300 / 0.280
G28     5.9            60.8               11.8 +/-    0.85      13.3 +/-    0.85  0.030 / 0.010
G30     125.2          67.3               14.2 +/-    0.43      15.3 +/-    0.43  0.030 / 0.010