PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-19:42:50
G01     48.0           23.9                9.0 +/-    0.65      18.0 +/-    0.65  0.110 / 0.230
G06     176.4          28.7               20.3 +/-    1.70      36.6 +/-    1.70  0.100 / 0.190
G07     147.2          10.4               22.5 +/-    4.68      62.4 +/-    4.68  0.200 / 0.380
G11     44.3           13.4                8.4 +/-    1.67      21.8 +/-    1.67  0.240 / 0.310
G13     247.8          28.8               15.3 +/-    1.75      27.4 +/-    1.75  0.060 / 0.090
G15     281.9          15.0               12.7 +/-    1.77      31.5 +/-    1.77  0.060 / 0.100
G17     314.5          77.5               14.2 +/-    0.84      14.5 +/-    0.84  0.040 / 0.070
G19     250.2          60.4               16.0 +/-    0.71      18.1 +/-    0.71  0.030 / 0.070
G28     56.8           51.7               11.6 +/-    0.92      14.3 +/-    0.92  0.030 / 0.040
G30     150.8          38.1               16.9 +/-    0.54      25.3 +/-    0.54  0.020 / 0.040