PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-20:42:20
G02     27.4           59.9               10.2 +/-    0.67      11.6 +/-    0.67  0.030 / 0.040
G05     145.2          58.7               12.3 +/-    0.47      14.1 +/-    0.47  0.030 / 0.030
G06     52.2           17.3                9.3 +/-    2.10      21.9 +/-    2.10  0.100 / 0.100
G12     196.4          70.1               12.2 +/-    0.52      12.9 +/-    0.52  0.160 / 0.100
G19     95.8           14.6               11.7 +/-    2.22      29.4 +/-    2.22  0.050 / 0.050
G25     302.1          51.0               10.9 +/-    2.88      13.6 +/-    2.88  0.040 / 0.070
G29     303.9          23.9                9.4 +/-    1.34      18.9 +/-    1.34  0.030 / 0.030