PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-15:28:00
G02     203.2          28.3               10.4 +/-    0.53      19.0 +/-    0.53  0.130 / 0.100
G06     159.1          66.7                9.7 +/-    0.80      10.5 +/-    0.80  0.080 / 0.080
G12     306.9          16.6                6.2 +/-    1.43      14.7 +/-    1.43  0.070 / 0.170
G17     33.9           50.8                7.3 +/-    0.35       9.1 +/-    0.35  0.080 / 0.170
G19     342.4          68.2                8.1 +/-    0.64       8.7 +/-    0.64  0.040 / 0.040
G24     300.3          37.5                7.0 +/-    1.88      10.6 +/-    1.88  0.030 / 0.060
G28     98.6           33.8                7.7 +/-    0.80      12.5 +/-    0.80  0.030 / 0.050