PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-04:58:00
G01     245.6          32.5                8.7 +/-    1.04      14.5 +/-    1.04  0.030 / 0.040
G03     314.8          45.9                5.6 +/-    1.67       7.5 +/-    1.67  0.030 / 0.040
G11     231.6          10.3                8.1 +/-    1.52      22.6 +/-    1.52  0.090 / 0.120
G14     66.4           36.5                5.3 +/-    0.64       8.1 +/-    0.64  0.080 / 0.110
G16     162.8          21.4                9.5 +/-    1.36      20.2 +/-    1.36  0.090 / 0.150
G22     297.7          69.9                8.3 +/-    0.70       8.8 +/-    0.70  0.080 / 0.140
G23     289.4          20.8                7.5 +/-    1.61      16.1 +/-    1.61  0.060 / 0.210
G26     135.3          40.9               10.3 +/-    1.16      14.8 +/-    1.16  0.060 / 0.220
G31     39.6           55.6                6.2 +/-    0.67       7.3 +/-    0.67  0.060 / 0.120
G32     80.3           22.0                5.6 +/-    1.47      11.7 +/-    1.47  0.060 / 0.130