PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-02:28:10
G02     60.2           31.6                8.7 +/-    1.12      14.7 +/-    1.12  0.080 / 0.060
G05     56.5           59.5                9.7 +/-    0.59      11.0 +/-    0.59  0.090 / 0.060
G12     186.2          34.6               11.9 +/-    1.36      19.0 +/-    1.36  0.220 / 0.280
G13     126.9          15.2               11.0 +/-    3.75      27.2 +/-    3.75  0.090 / 0.180
G15     162.6          13.3               11.9 +/-    3.67      30.8 +/-    3.67  0.070 / 0.080
G21     272.4          18.6               11.6 +/-    1.37      26.5 +/-    1.37  0.070 / 0.090
G25     235.1          51.7                8.8 +/-    2.60      10.9 +/-    2.60  0.040 / 0.040
G29     332.7          58.5               10.3 +/-    0.68      11.9 +/-    0.68  0.030 / 0.040