PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-01:28:00
G02     31.6           56.9                8.2 +/-    0.92       9.6 +/-    0.92  0.020 / 0.030
G05     140.7          60.3               10.4 +/-    0.61      11.8 +/-    0.61  0.040 / 0.030
G06     52.5           17.5                6.9 +/-    2.10      16.2 +/-    2.10  0.030 / 0.040
G12     202.5          70.6               10.8 +/-    0.49      11.4 +/-    0.49  0.030 / 0.040
G19     97.4           12.6                9.4 +/-    2.69      24.9 +/-    2.69  0.050 / 0.060
G25     301.5          50.9                8.4 +/-    1.79      10.5 +/-    1.79  0.050 / 0.060
G29     305.0          25.2                8.2 +/-    0.81      15.9 +/-    0.81  0.160 / 0.200