PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-19:43:00
G02     17.5           66.7                9.3 +/-    0.56      10.1 +/-    0.56  0.040 / 0.080
G05     159.0          49.4               13.5 +/-    1.15      17.2 +/-    1.15  0.050 / 0.060
G06     48.6           24.2                8.3 +/-    1.02      16.5 +/-    1.02  0.130 / 0.250
G12     223.7          77.6                9.3 +/-    0.84       9.5 +/-    0.84  0.190 / 0.270
G19     92.4           14.6               10.0 +/-    1.56      25.2 +/-    1.56  0.030 / 0.040
G20     197.1          16.9               14.1 +/-    2.01      33.5 +/-    2.01  0.020 / 0.030
G24     216.7          10.7               12.8 +/-    2.77      35.3 +/-    2.77  0.040 / 0.060
G25     306.4          50.0               11.9 +/-    1.24      15.0 +/-    1.24  0.040 / 0.050
G29     300.7          22.2               10.4 +/-    1.03      21.6 +/-    1.03  0.070 / 0.170