PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-16:12:40
G02     213.4          52.8               11.6 +/-    1.18      14.1 +/-    1.18  0.050 / 0.060
G06     67.3           75.6               10.1 +/-    0.94      10.4 +/-    0.94  0.060 / 0.060
G12     318.5          36.7                7.6 +/-    1.11      11.7 +/-    1.11  0.040 / 0.080
G17     54.7           33.8                9.0 +/-    0.38      14.7 +/-    0.38  0.050 / 0.100
G19     29.2           54.7                9.5 +/-    0.48      11.3 +/-    0.48  0.030 / 0.030
G24     269.1          42.8                8.2 +/-    0.93      11.4 +/-    0.93  0.030 / 0.030
G28     119.4          17.1                9.3 +/-    1.16      21.9 +/-    1.16  0.050 / 0.040