PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-00:27:50
G01     51.5           26.4                8.1 +/-    2.40      15.4 +/-    2.40  0.190 / 0.130
G06     178.8          22.8               11.8 +/-    0.89      24.2 +/-    0.89  0.170 / 0.160
G07     145.8          14.4               11.2 +/-    1.65      28.3 +/-    1.65  0.040 / 0.050
G11     45.9           18.7                8.5 +/-    3.71      19.4 +/-    3.71  0.030 / 0.050
G13     252.9          31.2                8.7 +/-    3.98      14.8 +/-    3.98  0.020 / 0.030
G15     284.7          16.2                9.5 +/-    1.54      23.1 +/-    1.54  0.030 / 0.030
G17     291.0          77.6                9.0 +/-    0.65       9.2 +/-    0.65  0.120 / 0.410
G19     244.3          58.5                8.5 +/-    0.80       9.8 +/-    0.80  0.140 / 0.370
G28     50.8           53.2                9.1 +/-    1.26      11.1 +/-    1.26  0.060 / 0.140
G30     148.1          40.0               11.4 +/-    0.70      16.6 +/-    0.70  0.070 / 0.120