PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-16:27:50
G01     53.4           27.2                8.6 +/-    2.13      16.0 +/-    2.13  0.090 / 0.150
G06     178.4          21.6               15.0 +/-    1.97      31.8 +/-    1.97  0.060 / 0.140
G07     144.5          12.8               13.0 +/-    3.39      34.1 +/-    3.39  0.040 / 0.050
G11     44.9           15.4                8.5 +/-    1.26      20.8 +/-    1.26  0.040 / 0.060
G13     256.9          32.2               11.7 +/-    2.16      19.6 +/-    2.16  0.050 / 0.100
G15     291.1          15.4                8.2 +/-    1.69      20.3 +/-    1.69  0.080 / 0.130
G17     306.8          79.9               11.7 +/-    1.01      11.8 +/-    1.01  0.130 / 0.350
G19     242.0          58.9               13.7 +/-    0.84      15.7 +/-    0.84  0.050 / 0.290
G28     46.6           54.3               11.3 +/-    0.36      13.6 +/-    0.36  0.120 / 0.340
G30     147.7          47.9               12.2 +/-    0.99      15.8 +/-    0.99  0.130 / 0.310