PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-05:27:50
G01     257.5          38.0                6.1 +/-    1.39       9.2 +/-    1.39  0.030 / 0.040
G03     316.4          36.0                1.7 +/-    1.79       2.7 +/-    1.79  0.030 / 0.050
G11     239.6          16.0                5.9 +/-    1.90      14.3 +/-    1.90  0.070 / 0.080
G14     55.9           42.7                3.0 +/-    0.67       4.2 +/-    0.67  0.060 / 0.090
G22     310.3          61.0                5.6 +/-    1.36       6.3 +/-    1.36  0.080 / 0.240
G23     281.7          14.6               -3.2 +/-    0.94      -8.1 +/-    0.94  0.110 / 0.360
G25     41.0           10.6                3.2 +/-    1.07       8.7 +/-    1.07  0.160 / 0.360
G26     143.4          32.3                6.7 +/-    0.58      11.1 +/-    0.58  0.040 / 0.080
G31     42.7           65.6                3.1 +/-    0.48       3.3 +/-    0.48  0.040 / 0.080
G32     71.7           27.9                3.1 +/-    0.40       5.6 +/-    0.40  0.050 / 0.090