PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-01:12:00
G02     44.0           45.9                7.2 +/-    0.44       9.7 +/-    0.44  0.040 / 0.040
G05     105.4          68.7               10.2 +/-    0.42      10.9 +/-    0.42  0.040 / 0.060
G12     189.3          53.9               11.9 +/-    1.71      14.3 +/-    1.71  0.030 / 0.040
G25     276.2          57.9               10.7 +/-    1.13      12.4 +/-    1.13  0.040 / 0.040
G29     315.0          36.3               10.1 +/-    1.15      15.6 +/-    1.15  0.040 / 0.070