PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-20:58:00
G02     200.8          25.0               18.8 +/-    3.81      36.7 +/-    3.81  0.110 / 0.170
G06     167.3          59.2               15.8 +/-    0.50      18.1 +/-    0.50  0.100 / 0.150
G17     22.6           58.8               12.5 +/-    0.72      14.4 +/-    0.72  0.280 / 0.540
G19     330.4          70.0               12.5 +/-    0.61      13.2 +/-    0.61  0.210 / 0.420
G24     306.9          32.7               12.2 +/-    1.91      20.2 +/-    1.91  0.040 / 0.040
G28     92.6           37.2               13.1 +/-    0.80      19.9 +/-    0.80  0.040 / 0.030
G30     157.4          10.4               11.7 +/-   21.53      32.4 +/-   21.53  0.040 / 0.070