PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-14:27:50
G02     215.8          53.9                9.3 +/-    0.80      11.2 +/-    0.80  0.050 / 0.040
G06     60.9           74.7                8.1 +/-    0.50       8.3 +/-    0.50  0.060 / 0.030
G12     318.9          37.8                5.8 +/-    0.94       8.7 +/-    0.94  0.070 / 0.060
G17     56.8           32.1                6.6 +/-    3.13      11.1 +/-    3.13  0.050 / 0.070
G19     31.1           53.8                7.4 +/-    1.18       8.9 +/-    1.18  0.050 / 0.060
G24     264.4          42.5                7.5 +/-    2.83      10.5 +/-    2.83  0.040 / 0.040
G28     121.2          15.7                9.0 +/-    1.58      21.9 +/-    1.58  0.060 / 0.090