PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-01:42:40
G02     200.5          27.6               10.2 +/-    1.64      18.7 +/-    1.64  0.040 / 0.080
G06     169.7          59.0                9.4 +/-    0.67      10.7 +/-    0.67  0.060 / 0.080
G17     23.9           58.0                8.3 +/-    0.92       9.6 +/-    0.92  0.030 / 0.030
G19     339.2          69.5                7.9 +/-    0.51       8.4 +/-    0.51  0.030 / 0.030
G24     306.6          32.8                7.8 +/-    2.46      12.9 +/-    2.46  0.100 / 0.090
G28     94.2           36.1                7.9 +/-    1.13      12.3 +/-    1.13  0.080 / 0.100