PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-02:57:40
G08     313.9          16.8                7.4 +/-    2.11      17.7 +/-    2.11  0.030 / 0.050
G10     317.3          57.0                8.4 +/-    0.94       9.8 +/-    0.94  0.030 / 0.040
G14     214.7          26.0               13.0 +/-    2.63      24.9 +/-    2.63  0.060 / 0.090
G15     45.8           19.1                4.9 +/-    0.79      10.9 +/-    0.79  0.060 / 0.110
G18     22.7           63.0                9.0 +/-    0.70      10.0 +/-    0.70  0.040 / 0.040
G21     125.3          63.8                8.7 +/-    1.02       9.6 +/-    1.02  0.030 / 0.040
G24     83.9           30.2                8.3 +/-    1.02      14.6 +/-    1.02  0.050 / 0.080
G27     282.2          38.1                9.3 +/-    1.44      14.0 +/-    1.44  0.070 / 0.080
G32     218.1          44.5               13.6 +/-    1.19      18.4 +/-    1.19  0.090 / 0.270