PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/21-00:12:50
G01     51.0           26.1                8.8 +/-    2.33      16.8 +/-    2.33  0.320 / 0.120
G06     178.6          23.5               12.2 +/-    2.81      24.6 +/-    2.81  0.190 / 0.160
G07     146.1          13.8               10.7 +/-    1.93      27.5 +/-    1.93  0.040 / 0.030
G11     45.7           18.1                8.5 +/-    2.34      19.5 +/-    2.34  0.030 / 0.030
G13     252.2          30.9                9.9 +/-    3.42      17.0 +/-    3.42  0.100 / 0.160
G15     284.1          16.1                9.7 +/-    1.79      23.6 +/-    1.79  0.080 / 0.130
G17     293.1          77.5               10.2 +/-    0.59      10.4 +/-    0.59  0.080 / 0.070
G19     245.2          58.9               10.3 +/-    0.71      11.8 +/-    0.71  0.050 / 0.040
G28     51.7           53.0                9.4 +/-    1.38      11.5 +/-    1.38  0.250 / 0.380
G30     148.5          39.5               12.7 +/-    0.59      18.6 +/-    0.59  0.090 / 0.240