PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/15-02:58:00
G01     103.0          27.6                5.4 +/-    0.80       9.9 +/-    0.80  0.040 / 0.060
G07     112.6          55.1                5.6 +/-    0.94       6.7 +/-    0.94  0.040 / 0.040
G08     41.8           17.7                4.5 +/-    1.22      10.4 +/-    1.22  0.050 / 0.050
G09     174.7          10.9                4.7 +/-    4.47      12.7 +/-    4.47  0.050 / 0.060
G11     85.5           42.9                5.4 +/-    0.67       7.5 +/-    0.67  0.030 / 0.030
G13     307.1          30.1                2.0 +/-    1.94       3.4 +/-    1.94  0.030 / 0.030
G17     207.8          41.9                5.3 +/-    0.51       7.5 +/-    0.51  0.120 / 0.160
G19     210.2          17.3                4.2 +/-    2.93       9.8 +/-    2.93  0.140 / 0.220
G28     327.5          61.6                2.5 +/-    0.56       2.8 +/-    0.56  0.060 / 0.100
G30     60.9           78.4                3.8 +/-    1.17       3.8 +/-    1.17  0.060 / 0.100