PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-01:57:40
G01     73.5           33.2                5.1 +/-    0.47       8.4 +/-    0.47  0.040 / 0.070
G07     136.1          33.3                6.8 +/-    0.98      11.2 +/-    0.98  0.040 / 0.040
G11     57.1           34.1                3.4 +/-    0.77       5.6 +/-    0.77  0.030 / 0.060
G13     278.3          37.4                7.2 +/-    1.00      11.0 +/-    1.00  0.040 / 0.060
G15     303.8          15.3                2.6 +/-    2.36       6.3 +/-    2.36  0.080 / 0.080
G17     229.6          65.7                7.5 +/-    0.44       8.1 +/-    0.44  0.060 / 0.090
G19     222.7          40.4                8.8 +/-    1.27      12.8 +/-    1.27  0.090 / 0.110
G28     16.9           59.5                4.3 +/-    0.34       4.9 +/-    0.34  0.080 / 0.100
G30     132.9          59.2                5.8 +/-    0.89       6.6 +/-    0.89  0.070 / 0.150