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                3.1 +/-    0.98       5.2 +/-    0.98  0.030 / 0.040
G07     136.1          33.3                6.5 +/-    1.49      10.6 +/-    1.49  0.030 / 0.040
G11     57.1           34.1                3.8 +/-    1.00       6.1 +/-    1.00  0.040 / 0.030
G13     278.3          37.4                5.7 +/-    1.35       8.6 +/-    1.35  0.040 / 0.030
G15     303.8          15.3                2.2 +/-    1.38       5.5 +/-    1.38  0.240 / 0.200
G17     229.6          65.7                7.1 +/-    0.97       7.7 +/-    0.97  0.050 / 0.060
G19     222.7          40.4                7.3 +/-    1.61      10.5 +/-    1.61  0.050 / 0.080
G28     16.9           59.5                3.7 +/-    1.17       4.3 +/-    1.17  0.070 / 0.060
G30     132.9          59.2                6.3 +/-    0.23       7.2 +/-    0.23  0.080 / 0.120