PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-21:57:30
G02     30.7           57.4                9.0 +/-    0.74      10.4 +/-    0.74  0.050 / 0.040
G05     140.7          61.0               11.1 +/-    0.44      12.5 +/-    0.44  0.040 / 0.040
G06     53.4           15.7                7.5 +/-    2.93      18.4 +/-    2.93  0.040 / 0.050
G12     195.4          67.9               10.3 +/-    1.61      11.0 +/-    1.61  0.040 / 0.050
G19     97.9           12.8                9.7 +/-    0.89      25.4 +/-    0.89  0.040 / 0.060
G25     299.2          52.5                8.6 +/-    0.99      10.5 +/-    0.99  0.040 / 0.060
G29     305.6          25.7                8.9 +/-    2.36      17.0 +/-    2.36  0.040 / 0.070