PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-04:43:10
G02     203.3          39.6                5.3 +/-    0.80       7.8 +/-    0.80  0.070 / 0.110
G06     162.7          70.4                4.3 +/-    0.41       4.5 +/-    0.41  0.090 / 0.100
G12     308.8          16.2                1.2 +/-    2.33       2.9 +/-    2.33  0.030 / 0.050
G17     37.8           48.0                1.9 +/-    1.60       2.4 +/-    1.60  0.030 / 0.040
G19     8.6            63.2                1.9 +/-    0.64       2.1 +/-    0.64  0.030 / 0.050
G24     295.7          38.8                2.1 +/-    2.03       3.1 +/-    2.03  0.030 / 0.030
G28     105.7          28.7                4.9 +/-    1.70       8.8 +/-    1.70  0.180 / 0.330