PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-04:28:00
G08     291.3919       23.5277          5.0005 +/-  1.3529   10.1103 +/-  1.3529  0.030 / 0.030
G10     5.2731         63.1236          2.8106 +/-  0.5904    3.1106 +/-  0.5904  0.030 / 0.030
G14     230.5823       48.4298          4.8195 +/-  0.9353    6.1994 +/-  0.9353  0.060 / 0.070
G18     61.3633        52.6911          3.4834 +/-  0.6617    4.2559 +/-  0.6617  0.040 / 0.090
G21     146.1176       40.4329          5.8898 +/-  1.1897    8.5066 +/-  1.1897  0.080 / 0.100
G24     57.1274        26.5654          4.5190 +/-  0.7449    8.5225 +/-  0.7449  0.090 / 0.130
G27     252.3988       31.2824          6.0771 +/-  0.8383   10.3657 +/-  0.8383  0.040 / 0.040
G32     246.3431       67.3600          3.9028 +/-  0.6528    4.1919 +/-  0.6528  0.050 / 0.040